template parts are now allowed to be variants

- Do not throw an error here!

InvenTree/part/models.py

@@ -262,6 +262,9 @@ class Part(MPTTModel):
                 if n_refs == 0:
                     previous.image.delete(save=False)
 
+        self.clean()
+        self.validate_unique()
+
         super().save(*args, **kwargs)
 
     def __str__(self):
@@ -433,11 +436,7 @@ class Part(MPTTModel):
     def clean(self):
         """ Perform cleaning operations for the Part model """
 
-        if self.is_template and self.variant_of is not None:
-            raise ValidationError({
-                'is_template': _("Part cannot be a template part if it is a variant of another part"),
-                'variant_of': _("Part cannot be a variant of another part if it is already a template"),
-            })
+        super().clean()
 
     name = models.CharField(max_length=100, blank=False,
                             help_text=_('Part name'),